18990258283 has 2 divisors, whose sum is σ = 18990258284. Its totient is φ = 18990258282.

The previous prime is 18990258247. The next prime is 18990258367. The reversal of 18990258283 is 38285209981.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18990258283 - 2¹³ = 18990250091 is a prime.

It is not a weakly prime, because it can be changed into another prime (18990258233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9495129141 + 9495129142.

It is an arithmetic number, because the mean of its divisors is an integer number (9495129142).

Almost surely, 2^18990258283 is an apocalyptic number.

18990258283 is a deficient number, since it is larger than the sum of its proper divisors (1).

18990258283 is an equidigital number, since it uses as much as digits as its factorization.

18990258283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 18990258283 in words is "eighteen billion, nine hundred ninety million, two hundred fifty-eight thousand, two hundred eighty-three".